user-avatar
chantungbuyn
2 năm trước
Đốt cháy hết 1,68g sắt trong không khí a) Viết phương trình phản ứng xảy ra b) Tính thể tích khí oxi tham gia phản ứng ở đktc c) Tính khối lượng sản phẩm thu được sau phản ứng d) Tính thể tích không khí cần dùng trong phản ứng trên . Biết thể tích không khí oxi chiếm 20% thể tích không khí
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

6. The town of Gouda is famous_____its cheese. a. on b. to c. from d. for 7. He was happy to be_______ friends again. a. among b. in c. near d. off 8. Were you brought ______ in the city or in the country? a. off b. forward c. up d. over 9. The teacher made Jane ______ up and answer his question. a. stand b. standing c. to stand d. stands 10. You’d better leave for the airport now_______ there’s a lot of traffic on the way. a. in case b. in order c. in fact d. in fact 11. There was so many ________ things that we never get ________ . a. interesting – boring b. interested – bored c. interested – boring d. interesting – bored 12. I turn on the radio_____listen to the news. a. so that b. in order c. so as d. in order to 13. I can speak______ words of French, but I can’t write it. a. little b. a little c. few d. a few 14. If I had time, I______ to the countryside with you this weekend. a. will go b. would go c. went d. would have gone 15. My uncle_____ you met yesterday is an engineer. a. which b. what c. whom d. whose 16. Don’t waste your breath________ with him. a. arguing b. argue c. for arguing d. to argue 17. When we came to visit her last night, she___________ a. is watching b. was watching c. has watched d. watched 18. You were not listening in class, __________? a. were you b. weren’t you c. was it d. wasn’t it 19. I’ll go to the town tomorrow, and_________ . a. so will my sister. b. my sister will either. c. neither will my sister. d. will my sister too. 20. _________ pass me the newspaper? ~ Sure. Here you are. a. Would you mind b. Could you please c. May you d. Why don’t you

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team